00:01
Hi, in this question we are given with benzoic acid and the solubility values are also given.
00:05
At 100 degrees celsius the solubility is 6 .80 gram per 100 ml and at 25 degrees celsius it is 0 .34 gram per 100 ml.
00:16
In first part of the question we are asked to calculate the minimum volume of water that is required to dissolve 1 gram of benzoic acid at temperature 100 degrees celsius.
00:27
According to solubility values, we can say that 6 .80 gram of benzoic acid can be dissolved in 100 ml of water.
00:38
Therefore, we can say that 1 gram of benzoic acid, which is asked in the question, will dissolve in 100 ml divided by 6 .80 gram into 1 gram.
00:52
From here, we can eliminate the gram unit.
00:55
On calculation, we are getting the minimum volume of water equals to 14 .7 ml.
01:04
In second part of the question, we are asked to calculate maximum theoretical percentage recovery when it is given that there is a recrystallization of 1 gram of benzoic acid from 15 ml of water.
01:17
We have to assume that solution is filtered at 25 degrees celsius.
01:21
From the solubility of benzoic acid at 25 degrees celsius, we can say that 100 ml water dissolves 0 .34 gram of benzoic acid.
01:33
1 ml of water will dissolve 0 .34 gram divided by 100 ml.
01:40
We are given with 15ml of water that will dissolve 0 .34 gram divided by 100mil into 15 emil...